This database indexes the 1929 publication, Roll of Honor, which contains the locations of the burial places of soldiers, sailors, marines, and army nurses who served in any of the wars of the United States and are buried in Illinois. The database contains more than 72,000 names.

This database of Black Hawk War Veterans indexes the first volume of Ellen M. Whitney's The Black Hawk War 1831-1832. That volume contains a comprehensive listing of Illinois' Black Hawk War soldiers. It includes the muster rolls for all of the 1831 and 1832 companies including 2 Indian companies. Approximately 1800 men served in the 1831 campaign and 9000 in the 1832 campaign. The Illinois State Historical Library possesses in either original or on microfilm the records from which this information was extracted.

The Illinois Civil War Muster and Descriptive Rolls database is a transcription of each soldier's entry in the record series, Muster and Descriptive Rolls (RS 301.020). The database contains information about over 285,000 soldiers from Illinois who served in the Union Army during the War of the Rebellion.

This database indexes the names of Illinois Mexican War veterans appearing in the ninth volume of the publication, Report of the Adjutant General of the State of Illinois (1902). In 1881 U. S. War Department clerks transcribed the Illinois rosters from their records and sent copies to the Adjutant General for publication. The 1882 Report of the Adjutant General of the State of Illinois first included Mexican War veterans. The names of approximately 6,500 men, organized into the First through the Fourth Regiments and four independent companies, are found in the 1882 report and the 1902 republication. As the Fifth and Sixth Regiments did not see active service, the publications do not include rosters for these units.

This database indexes the names of male residents of the Illinois Soldiers' and Sailors' Home admitted from its opening in 1887 through September 1916. Female residents are also included from their first admissions in 1908 through September 1916. The database contains more than 14,000 entries

This database of Illinois Spanish–American War Veterans indexes the portion of the ninth volume of the nine volume publication, Report of the Adjutant General of the State of Illinois, which lists veterans of that war. (The remainder of the ninth and the other eight volumes list veterans of the Black Hawk, Mexican, and Civil Wars.) This 1902 publication, originating from the rosters maintained by the Illinois Adjutant General, is the result of an 1899 Illinois statute mandating that the rosters of Illinois volunteers be printed. The names of approximately 11,000 men, organized into 10 regiments, are found in its pages

The Illinois Veterans' History Project began in 2004 and seeks to honor those men and women from Illinois who have served their country by recording their stories. Veterans or their family members complete and submit to the Illinois State Archives Illinois Patriot Information Forms, which contain information about their service to their country. In addition to filling out the form, veterans and their family members also are encouraged to write down their remembrances and recollections of their service. The purpose of this database is to provide you with an index to the names of Illinois veterans whose stories have been preserved on Illinois Patriot Information Forms and submitted to the Illinois State Archives for permanent retention.

This database indexes the names of Illinois militiamen listed on the War of 1812 muster rolls included in the ninth volume of the Report of the Adjutant General of the State of Illinois (1902). The original muster rolls, first published in the Adjutant General's 1882 report, record approximately 1500 names appearing in 24 rosters of officers, companies or units. The rosters, covering the Indian wars of 1810-1814, are incomplete. Unfortunately the original records, having never been transferred to the Archives' custody, are lost. The 1902 publication also includes histories of the 1810-1814 Indian campaigns.

This database indexes names of 5,610 Illinois citizens appearing on the rosters of Missouri's Federal Civil War units. Illinoisans occasionally joined military units raised in other states. In December 1863 the Missouri Adjutant General compiled rosters of Illinois men, extracting the names from his unit rolls.

This database indexes the Archives' record series, Roster of Illinois Men in the U.S. Navy During the Civil War (RS 301.022). This record of approximately 3,000 men came from the Illinois Adjutant General.